Paper-box-blank-making machine.



I. E. DAVIS. PAPER BOX BLANK MAKING MACHINE.

APPLICATION TILED FEB. 2? 1908. 907,0'1 1 Patented Dec. 15, 1908.

4 SHEBTSSHEET 1.

F. E. DAVIS. PAPER BOX BLANK MAKING MACHINE.

APPLIGATION FILED F1318x 24, 1908.

Patented Dec. 15,1908 4 SHEETSSHEET 2.

Patented Dec. 15, 1908.

4 SHEETSSHEBT 3.

Frank/ZZZ F. E. DAVIS.

PAPER BOX BLANK MAKING MAGHINBW APPLIOATIOK FILED r113. 24, 1903.

V N /v H M LNM R v r x a N Q 0 O K V I I I 1 t I I u I I n I RI O x i- RIN o 9m v .w n

Tn: mmms PETERS 60., yusumamu, o. c.

F. E. DAVIS! PAPER BO-X BLANK MAKING MACHINE.

APPLICATION FILED FEB. 24, 1908.

Patented Dec.15,1908.

4 SHEETS-SHEET 4.

UNITED STATES PATENT OFFICE.

FRANK E..DAVIS, OF NASHUA, NEW HAMPSHIRE, ASSIGNOR TO WILLIAM H.CAMPBELL, OF NASHUA, NEW HAMPSHIRE.

PAPER-B OX-BLANK-MAKING MACHINE.

such as pasteboard, millboard, or the like,

forwardly drawn off from a supply roll, blanks, for constituting thebodies of boxes, which are scored longitudinally relatively to therunning length of the stock at short distances from their edges, andalso scored .transversely relatively to such running line,

and have triangular pieces or miters cut from the blanks at the ends ofthe transverse scoring lines, the form of blank being represented inFig. 4 of the drawing forming part of this specification.

Inasmuch as it is impracticable, generally, to obtain stock in largeheavy rolls from the mill of exactly the width corresponding to that ofone of the blanks, this invention comprises means for longitudinallyslitting or removing the narrow surplus edge portions of the boardpreparatory to the subjecting of the latter to the action of the scoringand mitering rolls, which latter also cut the running stock transverselyat regular intervals into properly dimensioned portions for the boxblanks. And in order that the narrow, trimmed-off edge portions of therunning board may be prevented from being forwardly fed from the part ofthe machine at which the trimming is accomplished, to the scoringmitering and cuttingofi rolls, whereby, especially if such trimmed offstock became doubled on itself as it has the tendency to do, the machinewould become clogged and injured, the improved machine includes meansassociated with the trimming tools or disk cutters for cross scoring orcutting the narrow trimmed-off strips into short lengths and for guidingthe trimmed and cross severed material downwardly to the floor near thepoints of the trimming and severing operations.

The machine, furthermore, has combined therein opposite adjustable sideguides for the running strip, and means for simultane- Specification ofLetters Patent.

Application filed February 24, 1908.

.on line 6-6, Fig. 2.

Patented Dec. 15, 1908.

Serial No. 417,435.

they will have positions either nearer to or further from each other,accordingly as comparatively narrow or wide strip material is fed intoand through the machine. The machine furthermore comprises im provedcross scoring, edge mitering and cutting-off mechanism hving inoperative relation thereto new and advantageous guards and guides forcausing the triangular miters or cut-out pieces of the stock to passforwardly and downwardly from the scoring and mitering rolls, and also aset of rolls operative for causing the made and cut-off blank in itspassage therethrough to be subjected to a temporary bending actionwhereby the natural curvature of the stock which is inherent therein byreason of having been wound into the form of the supply roll and havingremained in such wound condition, is removed, with the result that thedelivered blanks will be forwardly thrown and piled up on a receivingtable in satisfactorily flat condition, instead of being delivered incrowned or arched forms; and in order that the relations of thestraightening rolls may be varied accordingly as to whether the stockmay require a gentle or a very decided straightening action, such rollsare mounted in adjustable journals or carriers therefor, enabling thechanged relations thereof to be accomplished without affecting, or beingaffected by, the driving gearing therefor. And the invention consists inthe combinations and arrangements of parts and the constructions ofcertain of the parts all substantially as hereinafter described inconjunction with the accompanying drawings and set forth in the claims.

In the drawings,Figure l is a side elevation of the improved paper boxblank making machine; Fig. 2 is a plan view of the same; Fig. 3 is aperspective view showing the details of construction of a guard andguiding device which is provided slightly in advance of the crossscoring mitering mechanism; Fig. L is a plan view of one of the blanks,which is of a common form, such as produced in this machine; Fig. 5 is acentral vertical longitudinal section ofthe machine as taken on line 55,Fig. 2. Fig. 6 is a vertical cross sectional view as taken Fig. 7 is aside view on a larger scale showing the aforementioned device for edgetrimming the supply ously adjusting both of such guides whereby stripfor cross scoring or cross cutting the trimmedfoff surplus and forguiding the l space between them to accord with the width samedownwardly; Fig. 8 is an elevation bf the same. Fig. 9 is an elevationshowing the adjustable mounting for the straighten-1 ing rolls; Fig. 10is a sectional view on line l0l0, Fig. 9. Fig. 11 is a partial crosssectional view through the scoring cylinder, showing certain structuraldetails hereinafter referred to.

In the drawings,A represents the frame of the machine of design anddimension having fitness to the purpose, B represents a bracket supportfor the supply roll 00 of the cardboard from which the blanks are to beproduced, 0 0 represent the upright, longitudinally ranging andparallel, transversely adjustable guide plates for the supply strip tothe rear of which is a guide roll a; D I) represent the devices fortrimming the surplus from the edges of the generally too wide supplystrip for bringing the strip to the exact width from which box blanks ofpredetermined size will be produced, this device also having thecapability of cross scoring or breaking the narrow edge waste portionsof the material into short lengths, and guiding the same downwardly; andalongside the latter are the scorers E for producing the scoring lines'y y l0ngitudinally in the running strip at short distances within theiredges; F indicates the first bed roll, that is the one on which thedevices D D and E E have their coaction; Gr represents the second bedroll at the level, and in advance of, the first bed roll F, peripherallycoacting with which is the roll or cylinder H, having at its peripheryand parallel with its axis scoring ribs 8 s, mitering dies or triangularcutting tools k and blades 0 c for cutting off the trimmedlongitudinally scored, mitered and cross scored blanks; at J will beseen the adjustable, geared together, straightening rolls for taking outthe curvature natural in the stock, by reason of the same having been inwound condition for a considerable time in the supply roll; and Krepresents the delivery table onto which the blanks are thrown by themomentum acquired in their passage through the feed roller devices ofthe machine.

The aforementioned side guiding plates C C have hub enlargements g gwhich are screw threaded and are in substance nuts engaging throughwhich are right and left hand screw threaded shafts g 9 both of which atone side of the machine are equipped with bevel gear wheels g g meshingwith which are bevel gear wheels g 9*, on longitudinal shaft g ,one ofthe shafts 9 also having at an end thereof a crank handle 9 forconveniently turning it.

The guide plates C C being originally adjusted at equal distances fromthe central longitudinal line of the machine, it is only necessary, inorder to widen or decrease the of the strip material to be passed andguided through the machine, to turn the crank handle g in the properdirection, whereupon the plates will be sinniltaneously moved at equalspeeds and distances either towards or away from each other.

The bed roll F is properly forward of the edge guide plates C G, andabove this bed roll is a girder-like cross bar It on which are mountedthe means of my devising, and generally represented by D, for cuttingoff narrow edge portions of the supply strip, cross cutting the same atshort intervals, and having adjacent thereto devices serving as guardsand guides for directing the waste cuttings downwardly onto the floor atthe ii'ltermediate part of the machine and behind the scoring andmitering mechanism. Each one of these duplicated devices D, asparticularly shown in Figs. 7 and 8, comprises a bracket like fixture77, secured by set screw k and gib h 011 the dove-tail shaped lowerportion of the supporting cross bar 71.; and this fixture or bracket /thas thereon a 1'0- tary element comprising a disk slitter lbs, and a hubit outside of said slitter made with a plurality of cross cutting orstock breaking ribs 72/7.

The slitting disk-like edge has a running bearing circumferentially onthe bed roll and the transverse cutting or stock breaking ribs klike-wise successively come to proximity or actual contact against thebed roll F next outside of the trimming slitter /L5, and the trimmed offandcross creased or broken waste runs forwardly, a short distance only,whereupon it comes to contact with a small roller it and is directeddownwardly by the guide piece it having a forwardly and downwardlycurved face, as shown in Fig. 7. Next within the above describedtrimming slitters and waste breaking devices, and adjustably mounted onthe cross bar it are a pair of the well known Robinson scoringattachments E, E, which impart the scorings 3/ in the running length ofthe supply strip at short distances within the concurrently trimmededges.

The roll it and curved faced guard and guide it at each side of themachine are as to each set of such roll and guide guard carried on aseparate bracket k sustained by the cross bar it transversely inside ofthe location of each Robinson scoring attachment, said bracket arm beingmade with an outwardly projecting horizontal arm it which extendshorizontally crosswise forwardly of the trimming slitter and crossbreaking ribbed wheel if, h, and 72, and supports the roll 71, andcurved faced guard and guide forward of and in the longitudinal verticalplane of rotation of the said slit-ting or waste trimming and crossbreaking device.

The scoring and cutting off roll H is carried on "a shaft z' andpositively driven by the bevel gear wheel 2' which meshes with a bevelgear wheel 2' adjustable by reason of a spline engagement along thevertical shaft 2' on which such bevel gear wheel 2' is secured, whenadjusted, by the set screw 2'. The said shaft i is by bevel gearing i 2'driven from the driving shaft M of the machine by pulley and belt i andi The said roll or cylinder H carries scoring ribs 8 s and cut-off ribsor blades 0 0, the latter being diametrically opposite, while thearrangements, around the circumference of the roll H of the scoring ribsis such as to give the scorings transversely of the line of travel ofthe strip at the proper distances from the edges of the blank asdetermined by the cuttingoff blades; and as the machine is constructedand here shown, the one cylinder has a pair of the scoring ribs at eachhalf thereof between the diametrically opposite cutting-off blades sothat during each complete rotation of the cylinder two complete blanksare scored and severed.

The cylinder as shown in Figs. 5 and 6, is made with deep grooves orchannels from end to end, the bases of which in extending from one endof the cylinder to the other are inclined slightly towards the axis ofthe latter.

The scoring and cutting off blades or plates having inner and outerparallel edges are bottomed upon different plates j, the outer edges ofwhich are parallel with the axis of the roll, while the inner edgesthereof are inclined or tapered corresponding to the inclination of thebases of the channels in the cylinder. The said bars or plates 7' j havescrew threaded stems y' at their opposite ends which protrude outwardlybeyond the ends of the cylinder and receive adjusting nuts j thereon sothat by loosening the nut at one end and turning up the nut at theother, the tapered edge bars may be drawn endwise within the channeltherefor and cause an adjustment either in an inward or outwarddirection of the blade.

The scoring blades 8 as shown in Fig. 6 are made step-shaped at theirend portions and the cylinder, near the opposite ends of each bladereceiving channel is made with a cylindrical socket, in which isreceived a correspondingly shaped block or plug 7:; having the miteringor V-shaped die at its outer surface and which plug or block bottoms onthe outer step-shaped end of the scoring blade and is held in itsadjustment, and also serves to hold the blade in its place in thecylinder by the obliquely applied set screw 70", Fig. 2, inserted fromthe end of the cylinder.

The scoring blades and the cutting off blades are similarly held in thegrooved cylinder by means particularly shown in Fig. 11. The grooves aremade widened and with step-shaped seats between their bases and mouths,and on such step-shaped seats, and at each side of the scoring orcutting blade are disposed a pair of retaining strips j, j", which haveinturned beveled lips or flanges j approached -at their outer edges toengage the V-shaped edge of the inwardly and outwardly adjustablescoring or cutting blade 8 or c. These strips are held in place byheaded screws f, the shanks of which pass loosely through them withscrew engagements into the body of the cylinder at the step formed orshouldered portions thereof.

The shaft 2' on which the cylinder h is carried is supported in journalboxes m, as shown in Figs. 1 and 6, and such blocks are adjustablysupported and confined between screws n on which the blocks rest andwhich screws engage into side members of the frame and the screws 0which also engage through side members of the frame above the journalboxes, have bearings by their lower ends against the tops of the boxes.The cylinder carrying shaft 2' may, therefore, be adjusted in properrelation to the bed roll ,7 w'th which it coacts so that the cut-offblades 0 c and the mitering dies 70 in their revolutions will come toactual contact against the bed roll for entirely severing the stock,while the scoring blades .9 s which protrude slightly less beyond theperimeter of the cylinder do not quite bottom against the bed roll, butapproach the latter sufliciently near to produce the suitably deepscorings in the stock.

Vith. the vertical bodily adjustment of the cylinder relatively to thebed roll and the capabilities for adjustment of the scor ing bladesabove described, the machine may be expeditiously placed in propercondition of adjustment for the accomplishment of entirely satisfactoryscoring, mitering and cutting off of the blanks.

Inasmuch as the machine is required frequently to be adapted for theproduction of blanks the sizes of which vary within a considerablerange, it is quite often necessary to substitute one scoring and cuttingcylinder H, carrying as a permanent appurtenance thereof the bevel gearwheel 2' for another of different diameter, but similarly equipped withthe bevel gear wheel at its one end; and in order that the driving bevelgear wheel on the vertical shaft 2' may always properly mesh with thebevel gear wheel 2' at the end of the cylinder, the spline engagementand set screw confinement of the gear wheel 2' on the shaft 2' is ameasure of considerable practical convenience.

The straightening rolls, the location of which is indicated at J,comprises a set or series of three axially parallel and transverselymounted rolls t t t, and intriangular arrangement, a line between two ofthe rolls forming the base while the third roll is at &

a higher point and in a vertical line between two base rolls; and theserolls which are geared together at their ends by the spur gear wheels 2,and driven from a train of gearing 6' from the bed roll G have theirjournals at each end fitted through blocks or bars i which areadjustable, two thereof horizontally and in line with each other, andthe third one in line at right angles thereto through slideways thereforin a semicircular bracket i mounted at each side of the machine suitablyforward of the scoring mechanism.

The bars or straightening roll carriers 1 are held in confinement by theset screws 5; and as manifest it is an easy matter to adjust the twolower rolls towards or further from each other and to adjust the thirdor apex roll so that the lower surface thereof is much or little, asdesired, below the level of the upper surfaces of the base rolls to insure a comparatively slight or extreme bowing of the blanks fedforwardly through the straightening rolls, reversely of the bowing whichthe blanks have by reason of having been in wound condition on thesupply roll 50.

Between" the scoring and cutting-off mechanism comprised by cylinder Hand bed roll G and the straightening rolls is a pair of feed rolls a itoperated by gears in the train i between the bed roll and straighteningrolls; and just to the rear of the said feed rolls u u is an appliancesuch as represented in section in Fig. 5 and in perspective in Fig. 3,the same consisting of a plate 4) extending from one side of the machineto the other, the rear edge of which, except at its extreme endportions, is in proximity or actual contact with the bed roller near thepoint where the cylinder is peripherally in contact therewith, but atthe end portions this plate is slitted, as shown at 42 and outside ofthe slit it has down-turned members '0 the positions of which areopposite the points of operation of the mitering dies f, If, and thusthe blank is guided properly horizontally forwardly with free spacesadjacent the edges of the blank for the clearance of the smalltriangular bits of cardboard which are cut out by the mitering dies.And. in order to prevent the blank from unduly rising so that it wouldnot properly proceed. to the nipping action of the rolls a u, theappliance aforementioned, as shown in Fig. 3, comprises a crosswiseextending bar o sus tained by right angular risers or end members '0held by screws to the plate 6 which latter in turn is screwed or clampedon the opposite side members of the frame.

I claim 1. In a machine for making paper box blanks, in combination, aframe, a support at the rear thereof for a supply roll of stripmaterial, cross scoring and cutting off rolls,

mounted at a forward portion of the ma chine, a bed-roll transverselymounted to the rear of the scoring and cutting-off rolls, and atransverse supporting bar above the bed roll, and edge-trimming slittersmounted on and depending below said bar, coacting with said bed roll atopposite sides of the machine and having at the outer side there of ribsalso coacting with the bed roll for transversely breaking thetrimmed-off edge portions of the strip material.

2. In a machine for making paper box blanks, in combination, a frame, asupport at the rear thereof for a supply roll of strip material, crossscoring and cutting off rolls, mounted at a forward portion of themachine, a bed-roll transversely mounted to the rear of the scoring andcutting off rolls, and a transverse supporting bar above the bed roll,brackets mounted on and depending below said bar at the opposite sideportions of the machine, carrying rotative elements coacting with thebed roll, each thereof comprising a circular, edge-trimming, slittingedge, and a cylindrical hub outwardly beyond such slitting edge havingtransverse, radially projecting, ribs at intervals around its periphery.

3. In a machine for making paper box blanks, in combination, a frame, asupport at the rear thereof for a supply roll of strip material, scoringand cutting off rolls, mounted at a forward portion of the machine, abed roll transversely mounted to the rear of the scoring and cutting offroll, and a transverse supporting bar above the bed roll, edge trimmingslitters mounted on and depending below said bar, coacting with the bedroll at the opposite side portions of the machine and having cylindricalhubs at the outer sides thereof provided with radial ribs also coactingwith the bed roll for transversely breaking the trimmed off portions ofthe strip material, disks for longitudinally scoring the traveling stripmaterial sustained by said transverse bar inside of the edge trimmingslitters, and depending brackets mounted on said transverse bar, insideof the scoring disks, having lower members horizontally and outwardlyextending adjacent but forward of the edge trimming slitters and ribbedhubs, and provided with guards it having downwardly and forwardlyinclined guiding faces.

4. In a machine for making paper box blanks, in combination, a frame, asupport at the rear thereof for a supply roll of strip material, scoringand cutting ofi rolls, mounted at a forward portion of the machine, abed roll transversely mounted to the rear of the scoring and cutting offrolls, and a transverse supporting bar above the bed roll, edge trimmingslitters mounted on and depending below said bar, coacting with the bedroll at the opposite side portions of the machine and having cylindricalhubs at the outer sides thereof provided with radial ribs also coactingwith the bed roll for transversely breaking the trimmed off portions ofthe strip material, disks for longitudinally scoring the traveling stripmaterial sus tained by said transverse bar inside of the edge trimmingslitters, and depending brackets mounted on said transverse bar, insideof the scoring disks, having lower members horizontally and outwardlyextending adjacent but forward of the edge trimming slitters and ribbedhubs, and provided with guards h having downwardly and for- Wardlyinclined guiding faces, and a roll supported by each said horizontalmember between said radially ribbed hub and the inclined faced guard.

5. In a paper box blank making machine, the combination with a rotarybed roll, of a scoring roll or cylinder having deep longitudinal groovesopening to its periphery, having inclined bases, and made with outwardlyopening sockets near the ends of the grooves, bars having inclined inneredges, sunk within said grooves and provided with screw threadedprojections endwise extending beyond the ends of the cylinder, nutsscrewing on said projections and engaging against the ends of thecylinder, scoring blades, having step shaped ends, disposed in the saidgrooves, bottomed against the said bars and edgewise protruding beyondthe periphery of the cylinder, blocks sunk in said sockets, bottomed onthe step shaped ends of the scoring blades, and having mitering dies attheir exposed outer portions, set screws penetrating end portions of thecylinder and engaging against said blocks, and cutting off bladeslongitudinally carried by the cylinder at suitable positions between thelines of the scoring blades and mitering dies.

6. In a paper box blank making machine,- in combination, a transverselyarranged bed roll, a cylinder having scoring blades, mitering dies atthe ends thereof and cutting off blades, and provided with end journals,with a bevel gear wheel on one thereof, supports for said journals, avertical shaft, and means for rotatively driving it, and a bevel gearwheel to mesh with said cylinder bevel gear wheel, spline engaged andadjustable axially on said shaft, and a set screw for confining it inits adjusted position on the latter.

7 In a paper box blank making machine, in combination, a transverselyarranged bed roll, a cylinder having scoring blades, mitering dies atthe ends of such blades and cutting-off blades, provided with endjournals, with a bevel gear wheel on one thereof, journal boxes for saidournals, means for vertically adjusting them, a horizontal drivingshaft, a vertical shaft at the side of the machine bevel geared to thedriving shaft and having at an upper portion thereof a bevel gear wheel,to mesh with the cylinder bevel gear wheel, spline engaged, andadjustable axially on said vertical shaft, and a set screw for confiningthe latter named bevel gear in its adjusted position on said verticalshaft.

8. In a paper box blank making machine, the combination with a bed rolland a scoring, mitering and cutting-off cylinder adjacent and coact-ingtherewith, of a pair of feed rolls forward of the said bed roll andcylinder, and a horizontal transversely extending plate having its rearedge in proximity to the bed roll slightly near the upper surfacethereof and having recesses in the rear end portions thereof adjacentthe paths of revoluble movement of the mitering cutters.

9. In a paper box blank making machine, the combination with a bed rolland a cylinder having scoring blades, endwise located mitering dies andcutting-off blades, of a pair of feed rolls forward of such roll andcylinder and a plate transversely extending from side to side of themachine, having its location near the level of the upper surface of thebed roll and having near its end portions longitudinal. slits extendingto its rear edge and having portions 12 thereof outside of said slitsdownwardly turned.

10. In a box blank making machine, the combination with the bed roll anda scoring, mitering and cutting off cylinder, of triple blankstraightening rolls forward of the bed roll and cylinder, which in theirtransverse aspect are arranged in triangular form, opposite sidesupporting brackets and carrier bars in the inner ends of which saidstraightening rolls are journaled, two of which carrier bars areadjustable horizontally and longitudinally in alinement towards and fromeach other, while the third carrier bar is adjustable vertically neareror further from the axes of the two lower rolls, and means for confiningsaid carrier bars in their adjusted positions in the side brackets.

Signed by me at Nashua, N. H.,- this 12th day of February 1908.

FRANK E. DAVIS.

Witnesses:

lvoRY C. EATON, LENA F. PRIOHARD.

